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76 lines
1.6 KiB
Markdown
76 lines
1.6 KiB
Markdown
---
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title: openapi3.Unmarshal
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description: Unmarshals the given resource into an OpenAPI 3 document.
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categories: []
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keywords: []
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action:
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aliases: []
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related: []
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returnType: openapi3.OpenAPIDocument
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signatures: ['openapi3.Unmarshal RESOURCE']
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---
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Use the `openapi3.Unmarshal` function with [global], [page], or [remote] resources.
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[global]: /getting-started/glossary/#global-resource
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[page]: /getting-started/glossary/#page-resource
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[remote]: /getting-started/glossary/#remote-resource
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[OpenAPI]: https://www.openapis.org/
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For example, to work with a remote [OpenAPI] definition:
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```go-html-template
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{{ $url := "https://raw.githubusercontent.com/OAI/OpenAPI-Specification/main/examples/v3.0/petstore.json" }}
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{{ $api := "" }}
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{{ with resources.GetRemote $url }}
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{{ with .Err }}
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{{ errorf "%s" . }}
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{{ else }}
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{{ $api = . | openapi3.Unmarshal }}
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{{ end }}
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{{ else }}
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{{ errorf "Unable to get remote resource %q" $url }}
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{{ end }}
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```
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To inspect the data structure:
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```go-html-template
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<pre>{{ debug.Dump $api }}</pre>
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```
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To list the GET and POST operations for each of the API paths:
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```go-html-template
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{{ range $path, $details := $api.Paths }}
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<p>{{ $path }}</p>
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<dl>
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{{ with $details.Get }}
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<dt>GET</dt>
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<dd>{{ .Summary }}</dd>
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{{ end }}
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{{ with $details.Post }}
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<dt>POST</dt>
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<dd>{{ .Summary }}</dd>
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{{ end }}
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</dl>
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{{ end }}
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```
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Hugo renders this to:
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```html
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<p>/pets</p>
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<dl>
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<dt>GET</dt>
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<dd>List all pets</dd>
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<dt>POST</dt>
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<dd>Create a pet</dd>
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</dl>
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<p>/pets/{petId}</p>
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<dl>
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<dt>GET</dt>
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<dd>Info for a specific pet</dd>
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</dl>
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```
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